tX509_NAME_add_entry_by_txt

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C)
alias tX509_NAME_add_entry_by_txt = int function(X509_NAME* name, in char* field, int type, const(char)* bytes, int len, int loc, int set)

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